- Court of Appeals for the Federal Circuit | Thursday, November 13, 1997 | Cited 0 times
- Supreme Court of the United States | Monday, August 13, 1990 | Cited 0 times
- Court of Appeals for the Federal Circuit | Tuesday, March 8, 1994 | Cited 0 times
- Court of Appeals for the Federal Circuit | Wednesday, February 15, 1995 | Cited 0 times
- Supreme Court of the United States | Tuesday, March 19, 1991 | Cited 0 times